Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

PL/SQLÓαê×ܽá

Óα꣺ָÏò´¦ÀíSQLÓï¾äµÄ»·¾³ÇøÓòµÄÖ¸Õë»ò¾ä±ú
-----|-1 ¾²Ì¬Óαê
       |---1.1 ÒþʽÓαê
       |          ´¦Àí£ºINSERT,DELETE,UPDATE¼°·µ»ØÒ»ÐеÄSELECTÓï¾ä
       |          ²Ù×÷£ºÓÉPL/SQL×Ô¶¯¶¨Òå²¢Íê³É´ò¿ªÓë¹Ø±Õ¶¯×÷
       |          ÊôÐÔ£º%FOUND,%NOTFOUND,%ISOPEN,%ROWCOUNT
       |---1.2 ÏÔʾÓαê
       |          ´¦Àí£º·µ»Ø¶àÐеÄSELECTÓï¾ä
       |          ²Ù×÷£º1.2.1 ÏÔÊ¾ÍÆ½øÑ­»·
       |                                --ÉùÃ÷Óαê
       |                                --´ò¿ªÓαê
       |                                --ÍÆ½øÓαê
       |                                --¹Ø±ÕÓαê
       |                     1.2.2 ×Ô¶¯ÍƽøÑ­»·
       | 


Ïà¹ØÎĵµ£º

SQL SERVER£ºselect ×Ö·û´®Æ´½ÓÎÊÌâ

Ò»¡¢ÎÊÌâ
select UserID,LastName,FirstName,UserName from SYSUser
UserID LastName FirstName UserName
------------------------------------------------------
1      A        B        C
2  &nb ......

db2 V8µÄÓйØSQL limits

The following tables describe certain SQL
limits. Adhering to the most restrictive case can help the programmer
design application programs that are easily portable.
Table 7. Identifier Length Limits
Description
Limit in Bytes
Longest authorization
name (can only be single-byte characters) ......

SQL ³£ÓÃÓï¾ä

(1)Êý¾Ý¼Ç¼ɸѡ£º
sql="select*fromÊý¾Ý±íwhere×Ö¶ÎÃû=×Ö¶ÎÖµorderby×Ö¶ÎÃû[desc]"
sql="select*fromÊý¾Ý±íwhere×Ö¶ÎÃûlike'%×Ö¶ÎÖµ%'orderby×Ö¶ÎÃû[desc]"
sql="selecttop10*fromÊý¾Ý±íwhere×Ö¶ÎÃûorderby×Ö¶ÎÃû[desc]"
sql="select*fromÊý¾Ý±íwhere×Ö¶ÎÃûin('Öµ1','Öµ2','Öµ3')"
sql="select*fromÊý¾Ý±íwhere× ......

jspÁ¬½Ósql2005

ÔÚ¹ÜÀí¹¤¾ßÀïÃæÓÐÊý¾ÝÔ´   Ñ¡ÔñsqlÊý¾ÝÔ´
ÔÚ´úÂëÖУº
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@page  import="java.sql.*"%>
<html>
    <head>
        <meta http-equiv="Content-Type" content= ......

¡¾×ª¡¿ACCESSÖÐÈçºÎÔÚSQLÓï¾äµÄWHEREÌõ¼þÖмÓÈÕÆÚÌõ¼þ

ת×Ô
http://topic.csdn.net/t/20050110/09/3711952.html
accessÖÐʱ¼äÒªÓÃ#,²»ÊÇË«ÒýºÅ  
  select   *   from   kc   where   rq   <   #2000-01-01#   and   rq>#2002-01-01#  
  ²»ÒªÓÃbetween,ËüµÄЧÂÊÌ©µÍ  
ʹÓÃ# ¶ø²»ÊÇ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ